Carburetor



Nov. 12, 1929. I

E. A. JONES 1,735,202

CARBURETOR Filed Nov. 15, 1926 INVENTOR.

TTORNEYi Patented Nov. 12, 1929 UNITED STATES PATENT OFFICE EDWIN A. JONES, or MILWAUKEE, WISCONSIN, ASSIG R 'TO L J. MUELLER FURNACE COMPANY, OF MILWAUKEE, WISCONSIN, ,A CORPORATION or WISCONSIN CARBURETOR This invention relates to improvements in carburetors, more particularly adapted for use with boilers and furnaces for heating purposes.

In the ordinary household heating boilers, when coal is fed to the fire pot, a considerable amount of gas will be given off by the fresh coal which will pass through the fines and discharge through the chimney without burning, with the resultant loss in eliiciency of the boiler.

Furthermore, the fresh coal usually produces considerable smoke and soot, which is very objectionable from many points of view.

It is one of the objects of the present invention to overcome the before mentioned Objectionable features, and provide a carburetor which will cause the gas and smoke rising from the freshly fed coal to burn and be consumed in the fire chamber of the boiler, thus conducing to the etliciency of said boiler.

A further object of the invention isto provide a carburetor for a boiler or other heat ing means which will adapt the boiler to burn bituminous coal in nut or pea size, mine run or even screenings efiiciently.

A further object of the invention is to pro vide a carburetor which will cause the gas given off by freshly fed coal to burnand utilize a portion of the heat so obtained to trans form the soft coal to a homogeneous mass of completely carbonized coal and then burn the same. I

A further object of the invention is to provide a carburetor which will eliminate the formation of soot in the fines of the boiler.

A further object of the invention is to pro vide a carburetor which maybe mounted in many boilers now on the market.

A further object of the invention is to pro vide a carburetor for boilers, furnaces or other heating devices which is of simple construction, is strong and durable, and is well adapted for the purpose described.

Vith the above and other objects in view, the invention consists of the improved carburetor and its parts and combinations as set forth in the claims, and all equivalents thereof. i so In the accompanying drawing in which the same reference characters indicate the same parts n all of the views:

Fig. 1 Is a top view of a boiler provided with the improved carburetors, parts of the the carburetors and a sectional viewof a portion of the boiler.

Referring to the drawing, the numeral 5 indicates a portion of a boiler which is provided with the usual fire pot 6, grate 7 and door 8 Opening into the fire pot. Some boilers now on the market are formed with small front and rear clean-out openin s '9 and 10 above the level of the door 8, an advantage ista-lten of these openings after the removal of the doors, to accommodate the improved carburetors 11 and '12. The carburetor 11 is in the form ofa casing, of a size and shape to closely {it into and close the opening 9 of the boiler, and the portion 11' outside of the "boiler,curves outwardly and downwardly, and its lower end is closed by a slide gate valve 13 for. controlling the flow of air through the carburetor. From the opening 9, the casing of the carburetor 11 is of considerably less cross sectional area than the outer part, and the extension 14 projects inwardly and downwardly in a curved formation having a lower open end 15 to direct the air directly upon the coal in thefire pot; By reducing the cross sectional area of the extension, more speed to the air drawn through the casing is provided, to better direct the air on top of the fire in the fire pot.

The carburetor 12 is similar in every respect to the carburetor 11, with the exception that the inner portion 15 is of bifurcated form, and the two arms or extensions 16 are spaced apart to extendon opposite sides of the water chamber part 17. Said arms extend inward.- ly and downwardly to direct the flow of air upon the coal in the fire pot, as before mentioned. The outer downwardly turned end of the carburetor v12 is provided with a slide gate valve 18 similar to the valve 11. I

In using the carburetors, the draft of the chimney to which the heater is connected, will direct air downwardly on top of the coal in suflicient controlled quantity to cause the gas rising from the burning coal to ignite and 5 completely burn. The almost complete consumption of the fuel and gas will almost entirely eliminate the formation of clinkers, soot, etc., thus providing a very eflicient device. By using the carburetors, it is possible to burn nut or pea coal or screenings etficiently without the formation of hard clinkers. While the form of carburetors shown are particularly adapted for use in the cleanout openings of boilers and other heaters, it is to be understood that heaters may be constructed in which the carburetors are built in and form part of said heaters.

From the foregoing description, it will be seen that the improved carburetor is of very simple and novel construction, and is well adapted for the purposes set forth.

What I claim as my invention is: 1. The combination with a heater having a fire pot and a door opening into the fire pot and an opening above the same, of a carburetor therefor, comprising a rectangular carburetor casing connected to the heater and having an extension of less cross sectional area than the other portion extending through the opening above the door and downwardly toward the fire pot to a point' above the plane of the door opening and having an open end for directing air downwardly toward the fire in said fire pot, the outer portion of the casing of larger cross sectional area curving outwardly and downwardly and terminating on a plane above the plane of the inner end of the extension, and a slidable gate valve mounted on the outer lower open end portionof the casing for controlling the flow of air through the casing. V

2. The combination with a'heater having a fire pot and a door therefor and a front and a rearopening above the plane of the door and the fire pot, of a carbureting means therefor, comprising a carburetor casin having an extension which passes through the front opening and extends downwardly to- 50 ward the fire pot and has a lower open end, the outer portion of the casing extending outwardly and downwardly, a valve mounted on the outer downwardly extending end of the casing, a second carburetor casing hav- 5 ing a bifurcated extension which passes through the rear opening and extends downwardly toward the fire pot and has lower open ends, the outer portion of the second carburetor casing extending outwardly and 60 downwardly, and a valve for the outer and downward end portion of said second casing. V

In testimony whereof, I mix. my signature.

65 I a EDWIN A. JONES, 

